Saturday 2 September 2017

networking - Windows Network Connection Speed Property


Consider this rough network drawing:


   +-----------------------------------+
| Router - DHCP Server |
|-----------------------------------|
| Gigabit LAN ports |
| |
+--------------------+-------+------+
| |
+-------------------+ | +---+------+
| Gigabit Switch | | | PC-1 |
|-------------------| | |----------|
| | | | 10/100 |
| | | | NIC |
+-+---+---+---------+ | +----------+
| | | |
| | +-----------+
| +----------------+
| |
+-+-----------+ +--+-----------+
| PC-2 | | PC-3 |
|-------------| |--------------|
| | | |
| 10/100/1000 | | Unknown |
| NIC | | NIC |
+-------------+ +--------------+

I am currently at PC-2 and my connection status dialog should report 1.0 Gbps, correct?


Windows Connection Status Dialog


Is it true that this only tells the part of the "network story"? By this I mean that the speed is judged based only on the connection between my PC and my network gateway (router in my case) that I am configured for?


The connection speed to other nodes in the network would have to be determined independent of this metric, correct?


What if I did not have a Gigabit switch - but a (Megabit?) switch between my PC and the router? This would result in Windows reporting a 100 Mbps connection, correct?



Answer



The 1.0Gbps you are seeing there is the link speed negotiated between the PC in question's network adapter and the switch. It actually has little to nothing to do with actual speeds you may encounter between you and other devices at any given time.


If you had a 100Mbps adapter or switch, then the highest speed it could negotiate at is 100Mbps, and if that's the case, then it would show 100MBps in there.


enter image description here


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